Abstract:
A viscosity measuring apparatus comprising a removable viscosity testing module and a viscosity testing apparatus. The removable viscosity testing module comprises a ducting arrangement having a first portion for receiving the fluid and a second portion fluidly connected to the first portion. The viscosity testing apparatus further comprises means for causing the fluid to pass along the ducting arrangement between the first and second portions. The ducting arrangement comprises a first reference point, and a second reference point disposed downstream of the first reference point, the first and second reference points being separated by a fixed, calibrated distance along the ducting arrangement. The apparatus further comprises detecting means for detecting when the fluid reaches at least one of the first and second reference points, and a timer for determining the time taken for the fluid to pass from the first reference point to the second reference point.
Abstract:
A method and a device for the online determination of the viscosity of a polymer in pasty to liquid form undergoing processing, such as extrusion is disclosed. It is provided that for the online determination of the viscosity of the polymer, at least a portion of the polymer undergoing processing is diverted and conveyed to the measurement volume of a measuring module, a predetermined volume of the respective batch is expelled from the measurement volume through a measurement nozzle by subjecting the batch to a predetermined pressure, the time required for expelling the predetermined volume of the batch is measured, the measured values are used for calculating the viscosity of the polymer, and prior to the filling of the measurement volume with the polymer to be measured, the measurement volume is flushed at least once with a quantity of the polymer being processed.
Abstract:
Methods for determining fluid rheology, the methods including determining a first discharged volume or weight of a fluid at a first time, determining at least a second discharged volume or weight of the fluid at a second time, and calculating fluid rheology based on the determined first and at least second discharged fluid volumes or weights at the first and second times.
Abstract:
A capillary bridge viscometer, comprises an input port (flow in) an output port (flow out) a first capillary tubing arm (R1) in a first hydraulic path between the input port and a first differential detection point (DP+), a second capillary tubing arm (R3) in a second hydraulic path between the first differential detection point (DP+) and the output port (flow out), a third capillary tubing arm (R2) in a third hydraulic path between the input port (flow in) and a second differential detection point (DP−), a fourth capillary tubing arm (R4) in a fourth hydraulic path between the second differential detection point (DP−) and the output port (flow out), an adjustable mechanical flow restrictor (20) in one of the first, second, third, and fourth hydraulic paths, wherein the adjustable mechanical flow restrictor (20) is operative to mechanically adjust a resistance to flow of a fluid while the fluid flows through the adjustable mechanical flow restrictor.
Abstract:
A system and method for measuring the deformation over time of the surface of a non-Newtonian fluid in a sampling container in response to an airjet that is applied for a specified time. The change is the sample surface displacement is measured quantitatively by means of optical triangulation or other similar optical or electronic distance measuring device. After cessation of the airjet, gravitational forces cause the sample material to flow back to its original surface profile. Both the amplitude of the deformation displacement due to the force of the airjet and the recovered displacement, within specific time periods are characteristic of asphalt binder material with varying amounts of polymer or other additives used to control the ultimate properties and performance of the material. As a result, comparison of the quantitative measurements of control samples can allow discrimination from samples with different properties and hence different formulations.
Abstract:
In one general aspect, a capillary viscometer is disclosed that includes a source of fluid pressure, a pressure transducer responsive to the source of fluid pressure, and a first capillary tube having an inside volume that is hydraulically responsive to the source of fluid pressure. A two-dimensional array of optical detectors is positioned proximate the first capillary tube with a first plurality of its detectors optically responsive to the inside volume of the first capillary tube and including an image data output. An acquisition driver circuit is responsive to the image data output of the two-dimensional array to acquire a series of successive images of the inside volume of the first capillary tube. Viscosity computation logic is responsive to the acquisition driver circuit and the pressure transducer, and operative to compute the viscosity of the fluid from pressure values received from the pressure transducer and the succession of images of the inside volume of the first capillary tube.
Abstract:
The invention discloses a method and device for detecting clogging of a filter. The method comprises obtaining an ambient parameter, obtaining a threshold associated with the ambient parameter, and obtaining a speed of a fan which is located near the filter. The method further comprises comparing the fan speed with the threshold and outputting an alarm signal indicative of the clogging if the fan speed exceeds the threshold. The ambient parameter may comprise at least one of ambient temperature, atmosphere pressure and supply voltage.
Abstract:
A capillary bridge viscometer, comprises an input port (flow in) an output port (flow out) a first capillary tubing arm (R1) in a first hydraulic path between the input port and a first differential detection point (DP+), a second capillary tubing arm (R3) in a second hydraulic path between the first differential detection point (DP+) and the output port (flow out), a third capillary tubing arm (R2) in a third hydraulic path between the input port (flow in) and a second differential detection point (DP−), a fourth capillary tubing arm (R4) in a fourth hydraulic path between the second differential detection point (DP−) and the output port (flow out), an adjustable mechanical flow restrictor (20) in one of the first, second, third, and fourth hydraulic paths, wherein the adjustable mechanical flow restrictor (20) is operative to mechanically adjust a resistance to flow of a fluid while the fluid flows through the adjustable mechanical flow restrictor.
Abstract:
A powdery/granular material flowability evaluation apparatus and a powdery/granular material flowability evaluation method are provided to evaluate the flowability of a powdery/granular material in a dynamic state of the powdery/granular material. The powdery/granular material flowability evaluation apparatus (A) has a hopper (111) for storing a powdery/granular material to be measured, a vertical tube (11) having a flow-in port (1121) connected with a discharge port (1112) of the hopper (111) through which the powdery/granular material is discharged, a vibrator (2) for giving vibration to the tube (11), a laser vibrometer (3) for measuring the amplitude of the tube (11), an electric balance (4) for measuring the weight of the powdery/granular material fallen through the tube 11 from the hopper (111), and an evaluation value calculating section (512) for calculating an evaluation value evaluating the flowability of the powdery/granular material based on the measured amplitude and weight.
Abstract:
Blood fluidity is measured in a short time. A blood fluidity measurement system, which measures blood fluidity by flowing blood into a channel, is equipped with a TV camera which photographs the blood stream in the channel and an image processing part which detects the state of the blood stream in the channel as blood fluidity from the image taken by the TV camera.